Lagrangian Investigation of Two-Dimensional Decaying Turbulence
Fluid Dynamics
2009-11-13 v1
Abstract
We present a numerical investigation of two-dimensional decaying turbulence in the Lagrangian framework. Focusing on single particle statistics, we investigate Lagrangian trajectories in a freely evolving turbulent velocity field. The dynamical evolution of the tracer particles is strongly dominated by the emergence and evolution of coherent structures. For a statistical analysis we focus on the Lagrangian acceleration as a central quantity. For more geometrical aspects we investigate the curvature along the trajectories. We find strong signatures for self-similar universal behavior.
Keywords
Cite
@article{arxiv.0709.0628,
title = {Lagrangian Investigation of Two-Dimensional Decaying Turbulence},
author = {Michael Wilczek and Oliver Kamps and Rudolf Friedrich},
journal= {arXiv preprint arXiv:0709.0628},
year = {2009}
}